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- //
- // detail/atomic_count.hpp
- // ~~~~~~~~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
- //
- // Distributed under the Boost Software License, Version 1.0. (See accompanying
- // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- //
-
- #ifndef ASIO_DETAIL_ATOMIC_COUNT_HPP
- #define ASIO_DETAIL_ATOMIC_COUNT_HPP
-
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
- #include "asio/detail/config.hpp"
-
- #if !defined(ASIO_HAS_THREADS)
- // Nothing to include.
- #elif defined(ASIO_HAS_STD_ATOMIC)
- # include <atomic>
- #else // defined(ASIO_HAS_STD_ATOMIC)
- # include <boost/detail/atomic_count.hpp>
- #endif // defined(ASIO_HAS_STD_ATOMIC)
-
- namespace asio {
- namespace detail {
-
- #if !defined(ASIO_HAS_THREADS)
- typedef long atomic_count;
- inline void increment(atomic_count& a, long b) { a += b; }
- #elif defined(ASIO_HAS_STD_ATOMIC)
- typedef std::atomic<long> atomic_count;
- inline void increment(atomic_count& a, long b) { a += b; }
- #else // defined(ASIO_HAS_STD_ATOMIC)
- typedef boost::detail::atomic_count atomic_count;
- inline void increment(atomic_count& a, long b) { while (b > 0) ++a, --b; }
- #endif // defined(ASIO_HAS_STD_ATOMIC)
-
- } // namespace detail
- } // namespace asio
-
- #endif // ASIO_DETAIL_ATOMIC_COUNT_HPP
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